CCDM, Control of Communicable Diseases in Man

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This Power Point is part of an Enlisted Advancement Program training series for US Navy Corpsman rating provided by Naval Medical Center Portsmouth Virginia

Naval Medical Center Portsmouth is a military treatment facility serving active duty service members, their dependents and retirees in the Hampton Roads community of southeastern Virginia and northeastern North Carolina.

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CCDM, Control of Communicable Diseases in Man

  1. 1. COMMUNICABLE DISEASE IN MAN DERMATOPHYTOSIS
  2. 2. DERMATOPHYTOSIS  Dermatophytosis and tinea are general terms applied to fungal infection of keratinized areas of the body (hair, skin, and nails)  Causative agents are dermatophtyes, which are subdivided according to site of infection  TINEA BARBAE &TINEA CAPITIS  TINEA CRURIS &TINEA CORPORIS  TINEA PEDIS  ONYCHOMYCOSIS
  3. 3. DERMATOPHYTOSIS CON’T  TINEA BARBAE &TINEA CAPITIS (ringworm of the beard and scalp, Kerion, Favus  A fungal disease that begins as a small area of erythema and/or scaling and spreads peripherally  Leaves scaly patches of temporary baldness  Infected hairs become brittle and break off easily  Occasionally, kerions develop  A variety of tineacapitis caused byTrichophytonSchoenleinii forms favus of the scalp. ***Has a mousy smell.
  4. 4. TINEA BARBAE
  5. 5. TINEA CAPITIS
  6. 6. KERION
  7. 7. FAVUS OFTHE SCALP
  8. 8. DERMATOPHYTOSIS CON’T  Examination of the scalp under UV light (wood lamp)  TrichophytonSchoenleinii – no flourescence  Microsporum – yellow-green flourescence
  9. 9. Wood’s Lamp (UV light)
  10. 10. DERMATOPHYTOSIS CON’T  INFECTIOUS AGENTS  Various species of Microsporum andTrichophyton  Important to know the difference for therapeutic reasons
  11. 11. DERMATOPHYTOSIS CON’T  RESERVOIR  Humans harbourT  Animals, especially dogs, cats, and cattle harbour M
  12. 12. DERMATOPHYTOSIS CON’T  MODE OFTRANSMISSION  Direct skin to skin or indirect contact (the backs of seats, barber clippers, combs, hairbrushes, clothing and hats that are contaminated with hair from infected people or animals)
  13. 13. DERMATOPHYTOSIS CON’T  INCUBATION PERIOD  Usually 10 to 14 days  Viable fungus may persist on contaminated materials for long periods
  14. 14. DERMATOPHYTOSIS CON’T  SUSCEPTIBILITY  Children below the age of puberty are highly susceptible to M  All ages are subject toT infections  Reinfections mainly occur for infections spread amongst humans
  15. 15. DERMATOPHYTOSIS CON’T  METHODS OF CONTROL  Educate the public  Survey heads of young children by UV light before school entry in the presence of epidemics or in hyperendemic areas where the species is prevalent.  In mild cases, daily washing of the scalp  Sulfide shampoos help remove scales  In severe cases, wash and cover with a cap, which should be boiled after use.
  16. 16. TINEA CRURIS &TINEA CORPORIS  TINEA CRURIS  Ringworm of the groin and perianal region  Also known as “jock itch”
  17. 17. TINEA CRURIS &TINEA CORPORIS  TINEA CORPORIS  Ringworm of the body
  18. 18. TINEA CRURIS &TINEA CORPORIS  INCUBATION PERIOD  Usually 4 to 10 days  Widespread, aggravated by friction and excessive perspiration in axillary and inguinal regions and when temps and humidity are high  All ages are susceptible
  19. 19. TINEA CRURIS &TINEA CORPORIS  METHOD OF CONTROL  Launder towels and clothing with hot water and fungicidal agent  General cleanliness in public showers and dressing rooms  Thorough bathing with soap and water for removal of scabs and crusts and application of topical fungicide (miconazole, clotrimazole, etc)
  20. 20. TINEA PEDIS  TINEA PEDIS  Ringworm of the foot  Also known as Athlete’s Foot
  21. 21. ATHLETE’S FOOT
  22. 22. ONYCHOMYCOSIS  ONYCHOMYCOSIS  Ringworm of the nails  Nail gradually becomes detached from the nail bed, thickens, and becomes discolored and brittle  The nail eventually becomes chalky and disintegrates  DX: is made by micro exam of potassium hydroxide preps of the nail and a culture
  23. 23. ONYCHOMYCOSIS  RESERVOIR  Humans, rarely animals  So which one? T or M?  Incubation period is unknown
  24. 24. ONYCHOMYCOSIS
  25. 25.  ANY QUESTIONS????

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